#include<bits/stdc++.h>
using namespace std;
int main(){
    int n;
    cin >> n;
    for(int i = 1;i<=2*n-1;i++){
        if(i == 1||i == 2*n -1){
            for(int j =1; j<=3*n-2;j++){
                if(j>=n&&j<2*n){
                    cout << "*";
                }
                else
                    cout << " ";
            }
        }else{
            for(int k = 0;k<3*n-2;k++){
                if(k == abs(n-i) || k == 2*n -1 + (i-2)||k == (n-i)+(3*n-3)){
                    cout << "*";
                }else{
                    cout << " ";
                }
                //下边
            }
        }
        cout << endl;

    }



    return 0;